Khuang Aphaiwong (also spelled Kuang, Abhaiwong, or Abhaiwongse; Thai: ควง อภัยวงศ์, pronounced [kʰūaŋ ʔā.pʰāj.wōŋ]; 17 May 1902 – 15 March 1968), also known by his noble title Luang Kowit-aphaiwong (Thai: หลวงโกวิทอภัยวงศ์, pronounced [lǔaŋ kōː.wít.ʔā.pʰāj.wōŋ]), was the founder of the Democrat Party and three times the prime minister of Thailand: from August 1944 to 1945, from January to May 1946, and from November 1947 to April 1948.

[1] Khuang attended Debsirin School and Assumption College, Bangkok, later studying engineering at the Ecole Centrale de Lyon in France.

[2] Khuang was a member of the civil faction of Khana Ratsadon ("People's Party"), the group that promoted the Siamese revolution of 1932, that brought a regime change from absolute to constitutional monarchy.

As such he was at the head of the mission to Battambang which in July 1941 took control of the Cambodian territories occupied during the Franco-Thai War, to be renamed Phra Tabong Province.

On 1 August 1944, parliament elected him prime minister, after Phibun's plans to move the capital to Phetchabun and to create the Phutthamonthon Park failed to gain approval.